|"f2 setup" You mean bios setup? I'm not sure if that can be removed on a laptop. What's the exact model?|
About the factory restore--it probably doesn't have a restore partition but you can check. Hold down the 0 key (zero) while turning it on and see if it boots to the restore partition:
If that doesn't work you need the disks.
I don't know how you lose administrator rights but if you can't log on to an administrator account try 'safe mode' from the F8 boot menu. The default ADMINISTRATOR account will show as an option. Try logging on to it. Often it won't be password protected. If that's successful you can delete or change passwords on the other accounts or create new accounts.